Air-heating device for internal-combustion engines.



5.0. STRANGE & M. M. HE FFREAN. MR HEATING DEVICE FOR INTERNALCOMBUSTION ENGINES.

, H APPLICATION FILED JAN 12, 19M, 1,14,31

Patented June 15, 1915.

an snares rear @FHQE EDWERD'D. srnalvun, OF EAST ST. LOUIS, ILLINOIS,AND MARTIN M. HEFFREAN, or

- I v sr. Louis, mrssounr.

Specification of Letters Patent.

AIR-HEATING DEVICE INTERNAL-COMBUSTION ENGINES.

Patented June 15, 33915.

Application flied January 12, 1914. Serial No. 811388.

To all whom it may concern Be it known that we, EDWARD D. Scenarios andMARTIN M. HEFFREAN, both citizens of the United States, residing at EastSt. Louis, Illinois, and St. Louis, Missouri, respectively, haveinvented'a certain new and use ful Improvement in Air-Heating Devicesfor Internal-Combustion Engines, of which the following is a full,clear, and exact dc scription, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to air heating devices for internal combustionengines, and has for its'main object to provide a device of thecharacter described that is construct ed in such a manner that morepower is produced in an engine equipped with the same with a givenamount of fuel than in theen gines heretofore in use.

l-Ve have discovered that by adding preheated fresh air to thecombustible mixture produced by 'the carbureter of an internalcombustion engine, the eiiiciency of .the englue is greatly increased,and to this end we have provided novel means for heating fresh air andthereafter mixing the same with the charge that has, been formed in thecarbu-- reter.

Figure 1 of the drawings is a side elevational view, partly in section,of an airbeating device constructed in accordance with our invention.showing the same aplied to an internal combustion engine; Fig. is avertical sectional view taken on the .ine 2:2 of Fig. 1; and Fig. 3 is avertical sectional view of the air-heating device shown in Fig. 2, t

ieferring to the drawings which illustrate the preferred form of ourinvention, A designates an internal combustion engine provided with anexhaust manifold B and an intake manifold C, said intake manifold beingprovided at its lower end With a carbureter D of any suitableconstruction or design.

As'is well-known to those skilled in the art, in the ordinary internalcombustion engine of'the type illustrated, fuel and air are introducedinto the carburetor, there mixed,

and this combustible mixture is drawn up-- ward through the intakemanifold by the suction created in the cylinders of the-engine. We havefound that pre-heated fresh air added to this combustible mixturegreatly increases the efiiciency of the engine, and to accomplish thisin a convenient and simple manner we provide means whereby fresh air isheated by contact with the hot exhaust manifold and thereafterintroduced into the intake manifold at a point above the c-. rburete1'.vention herein shown this means consists of a housing or hollow casing Ethat is clamped tightly around the exhaust manifold B of the engine anda fiexibleconduit 1 which connects said casing to the intake manifold C.a The casing-E is preferably composed of an upper and lower section 2and 3, respectively, that are placed about the exhaust manifold and heldin operative relationship therewith by means of clamping screws 4 thatcooperate with laterally projecting flanges 5 arranged on saidsection's. Eachof In the embodiment of our inthe sections 2 and 3 isapproximately U-f shape in cross section and when assembled.

as shown, form an annular chamber 6 that surrounds the exhaust manifoldB. The upper section 2 is provided with a plurality of perforations 7 bymeans of which air is admitted to the chamber 6, and the lower section 3is provided with a hollow extension 8 to which the upper end of theflexible conduit 1 is attached, the lower end of said conduit beingconnected to a T 9 whose lateral branch is connected to the intakemanifold C by means of a. short pipe or nipple 10. The conduit 1 is.provided with a valve ll, preferably of the butterfly type. that isadapted to be operated by a rod 12 that cK- tend to a point withinconvenient reach of the operator of the engine. and by means of whichthe amount of air that passes through said conduit to the intakemanifold may be varied as desired.

In operation, the engine is started by means of the mixture produced bythe carbureter D, and after running ashort time so as to cause theexhaust manifold B to become heated, the valve 11 is opened by theoperator of the engine and the suction multiple cylinder engine andcreated in the cylinders of the engine causes fresh atmospheric air tobe drawn into the the engine; or, in other words, he of great assistancein removing the carbon deposits that collect on the inner walls of thecylinders. The method heretofore in use for accomplishing this consistsin alternately introducing the cleaning liquid, such as raw kerosene,into spine of the cylinders of a running the other cylinders while thecleaning liquid is agitated by the pistons and gradually dissolves thecarbon deposits. The usual method of introducing the liquid engine onthe is to remove the spark plugs of the desired cylinders and pour theliquid through the exposed openings. This method is trouble some andtakes a great deal of time, and

consequently. many engines are neglected and their efficiency reducedbecause of the accumulation of carbon on the inner walls of thecylinders.

We have found that by introducing the cleaning liquid, such as kerosene,directly into the intake manifold and mixing the same with thepro-heated fresh air that is generated the casing E, that a volatilecombustible mixture is formed which will operate the engineindependently of the carbureter D and at the same time remove ordissolve all .carbon or other foreign deposits that have formed on theinner walls, of the cylinders. To accomplish this in a simple andconvenient mannerwe provide a valve or pet-cock 13 in the lower openingof the T 9 to which'is attached a suitable conduit 14 that communicateswith a source of supply 15 of kerosene or other similar cleaning liquid;the suction produced in the cylinders acting to draw the liquid-into theintake manifold.

From the foregoing description it will be seen that we have devised anengine which comprises a simple and cheap means Wherebythe charges offuel that enter the cylinders of the engine are rendered more efiicient,and'whereby the cylinders of an engine may be easily and quickly clearedof deposits of foreign matter that accumulate therein.

While we have herein shown our inven- 'to what particular the efliciencyof the horizontally tion as applied to a four-cylinder, cycle internalcombustion engine 'of the L- head type, that is,- one in which both theexhaust and intake manifolds are arranged on the same side oftl'i"dngine, it is immaterial, so far as our broad idea is concerned,

type of engineour invention is applied, and it. is also understood thatmany minor changes may be made in the construction and arrangement ofthe parts constituting our invention without departing from the spiritthereof.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. A device of the character described comprising a hollow member thatis divided into two sections, the upper section being provided with aplurality of perforations and the lower section being provided with anextension for conveying the heated air.

2. An air heating device for internal combustion engines comprising anupper and a lower semi-circular housing that are U- shaped in crosssection and which are adapted to be clamped to the exhaust pipe so as toform an, annular chamber therearound, means on the upper housing foradmitting fresh air to said chamber, and conveying means on said lowerhousing.

3. In a device of the character described, an exhaust pipe, and anair-collecting chamber that surrounds said pipe and which comprises anannular U-shaped housing that is divided on a horizontal line so as. toform two semi-circular portions, the upper one of said portions beingprovided with a plurality of perforations, and the lower one of saidportions being provided with a flexible conduit.

4. An air-beatingdevice comprising a ring-shaped casing that isapproximately U- shaped in 'cross section and which provides a chamberthat is adapted to completely surround the exhaust pipe of an, internalcombustion engine, the outer .wall of said exhaust pipe forming theinner wall of said chamber, said casing beingsplit horizontally so as toform a plurality of sections,

the upper one of said sections having means.

for admitting fresh air to said chamber, and the lower one of saidsections having means for transmitting said air. I

5. An air-heating device for internal combustion engines comprising asemi-circular member that is U-shaped in cross section and which isprovided at its lower portion with laterally extending perforated lugsand in .its side walls with a plurality of airreceiving openings, acooperating semi-circular member that is U-shaped n cross section andwhich is-provided at its upper porfourtion with laterallyflextendinglugs that 00-.

operate. with said first-igientionedlug, said buis igatu resg in thepresence of two witlast-named member havmg imperforate side nesses, thisninth day ofJanuaf'y, 1914.

walls-and wait-conveying conduit leading EDWARD D STRANGE from'thelower; ortio n-thereof a'nd-me'ans 5 for securing 351 111 togethr so,as, to MARTINM' clamp the complete evice around the ex ,Witnesss: hmzst@a fgldflf the angina. GEORGE BAKEWELL,

'iagstimony whereof, we hereunto afiix GEORGE R. LADSON.

